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时间状语从句和原因状语从句专项练习 - 副本

时间状语从句和原因状语从句专项练习 - 副本
时间状语从句和原因状语从句专项练习 - 副本

时间状语从句和原因状语从句专项练习

I. Choose the best answer.

1. I learnt her hard-working and kind _______ I got to know her in the bookstore.

A. first time

B. for the first time

C. the first time

D. by the first time

2. It was not _______ he took off his dark glass I realize who he was.

A. when; that

B. until; when

C. when; then

D. until; that

3. It was 19 years _______ Mandela, the former president of South Africa, was set free from prison.

A. before

B. since

C. until

D. that

4. _______ had the bell rung _______ the students took their seats.

A. Hardly; when

B. No sooner; when

C. Hardly; than

D. No sooner; then

5. We walked along the beach for nearly three hours _______ we saw a boat on the sea.

A. when

B. before

C. unless

D. until

6. The two brothers quarreled and quarreled _______ they felt sleepy and went to bed.

A. when

B. before

C. unless

D. until

7. —What was the party like?

—Wonderful. It’s years _______ I enjoyed myself so much.

A. after

B. before

C. when

D. since

8. It was quite a long time _______ I made it out what had happened.

A. after

B. before

C. when

D. since

9. _______, he went upstairs to sleep without supper.

A. He was tired

B. As he was tired

C. Tired as was he

D. As tired as he was

10. We sent the injured to the First-aid Centre_______ the accident happened.

A. immediately

B. hurriedly

C. quickly

D. shortly

II. Fill in the blanks with proper conjunctions.

11. She looks unhappy recently _______ her demand has been turned down by her boss.

12. _______ times have changed, good revolutionary traditions can’t be thrown away.

13. _______ all the world were against me, I should still hold to my opinion.

14. _______ she got the pay, she put it away in the bank.

15. I was wandering through the street _______ I caught sight of a tailor’s shop.

16. He was drinking juice _______ the rest of us drank whisky.

17. _______ you read the poem a second time, the meaning will become clearer to you.

18. We walked along the seaside about two hours _______ we came to

a fisherman’s village.

19. The sailor stayed on the lonely island ____ a ship passed there and saved him.

20. It was eight years_______ the Chinese people drove off the Japanese aggressors.

2019英语四级语法精讲:原因状语从句

2019英语四级语法精讲:原因状语从句 原因状语从句 连接词:because,since,as,for,now that,in that,owing to,due to,thanks to,because of,as a result of; 比较:because,since,as和for 1)because语势,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。 I didn't go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2)由because引导的从句如果放在句末,且前面有逗号,则能够用for 来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能 用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today. now that :既然; in that :因为,通常只能放在句中,强调重要的,的的原因; eg:Now that this semester is finished, I am going to rest a few days and take a trip. Human beings are different from animals in that human can speak and think. owing to, due to, thanks to, because of , as a result of等短 语后面只能接词或短语,不能接从句。

原因状语从句的用法

原因状语从句的用法 原因状语从句表原因,以下逐一介绍高考中常见的原因状语从句的引导词: 1. because引导的原因状语从句一般放于主句之后, because表示直接原因,语气最强,最适合回答 why引导的疑问句。例如: I do it because I like it. 我做这件事是 因为我喜欢。 注意:“not ... because”结构中的not否定的是because引导的整个从句,有时也否定主句例如: The country is not strong because it is large. 国强不在大。I 2. since引导的原因状语从句一般放于主句之前表示已知的、显然的理由(通常被翻译成“既然”),较为正式,语气比because弱。例如: Since you are free today, you had better help me with my mathematics. 既然今天你休息,你最好帮我补习数学。 注意: seeing (that), now (that), considering (that), in that这几个词汇与since引导的原因状语从句意思相近,都表示“既然”。例如: Seeing (that) he refused to help us, there’s no reason that we should now help him. 他既然曾经拒绝帮助我们,我们现在没有理由要来帮助他。// Now (that) you are grown up, you should not rely on your parents. 既然你长大了,就不应该依靠你的父母了。// Considering (that) everyb ody is here, let’s begin our discussion. 既然大家都到了,我们就开始讨论吧。// In that he is ill, he feels unable to do it. 因为有病,他觉得做不了那件 事。注意: 1. considering 和 given 还可用介词。如: Considering his age, the little boy reads very well. 就他的年龄来说,这小孩读得 挺好的。 Given her interest in children, I am sure teaching is the right career for her. 考虑到她喜欢孩子, 我可以肯定教书是最适合她的职业。 2. 表示“因为”的连词不能与表示“所以”的 so 连用。如: 译:因为他病了,所以没有出席会议。 误:Because he was ill, so he didn’t attend the meeting. 正:He didn’t attend the meeting because he was ill. 正:He was ill so he didn’t attend the meeting 3. as 引导原因状语从句时表示附带说明的“双方已知的原因”,语气比since弱,较为正式,位置较为灵活(常放于主句之前)。例如:As it is raining, you’d better take a taxi. 既然在下雨,你最好乘出租汽车。// As you are tired, you had better rest.

状语从句练习题经典

$ 状语从句练习题经典 一、初中英语状语从句 1.We’ll go to the farm and help the farmers with the apple-picking if it ______tomorrow. A.isn’t rain B.will be rainy C.doesn’t rain D.is raining 【答案】C 【解析】 【详解】 # 句意:如果明天不下雨我们将会去农场帮农民摘苹果。考查条件状语从句。根据题干We’ll go to the farm and help t he farmers with the apple-picking if it ______tomorrow.可知,if引导的条件状语从句,主句用将来时,从句需用一般现在时,句意是“明天不下雨”,rain是实意动词,主语是it,变否定用助动词doesn’t。故选C。 【点睛】 主将从现是指在时间状语从句和条件状语从句中,如果主句是一般将来时,从句用一般现在时替代一般将来时。 常见的有以下四种情况: 一、条件状语从句的主句是一般将来时,那么从句常常用一般现在时 如: When I grow up, I’ll be a nurse and look after patients 我长大后要当一名护士,照顾病人 二、如果主句是祈使句,那么从句通常要用一般现在时 ) 如:Don’t laugh at me when I make a mistake. 我犯错误的时候不要笑话我。 三、如果主句是含有情态动词的一般现在时,根据需要从句多用一般现在时 如:You should be quiet when you are in the reading room 在阅览室时应保持安静 四. 如果if的条件状语从句遇到变换间接和直接时 , 祈使句应用not to.... 如; She said not to close the window 常见的时间状语从句的连词有:as soon as,when,while ,as,until等 ~ 2.Tony has had to cook by himself ________ his mother went on business to Guangzhou. A.since B.after C.during D.when 【答案】A 【解析】 【详解】 句意:自从妈妈去广州出差以来,托尼不得不自己做饭。A. since从……以来;B. after

状语从句练习题(1)

状语从句练习题(1) 一、初中英语状语从句 1.Helen didn't know anything about it_______ her father told her. A.if B.because C.after D.until 【答案】D 【解析】 【详解】 句意:直到她的父亲告诉她,她才知道关于它的一些事情。 考查连词辨析。if是否,如果;because因为;after在......之后;until直到。短语 not ...until...意为“直到......才......”,故选D。 2.The Italian woman didn’t feel a culture shock____it was her first time to Shanghai. A.though B.since C.if D.when 【答案】A 【解析】 句意:这个意大利妇女没有感到一种文化冲击,尽管她是第一次来上海。A. though尽管; B. since自从; C. if 是否,如果; D. when当---时候;根据The Italian woman didn’t f eel a culture shock这个意大利妇女没有感到一种文化冲击,和it was her first time to Shanghai.她是第一次来上海之间用though 引导让步关系状语从句;故选A 3.Rony will get a chance to work in this company ________ he doesn’t pass the interview. A.unless B.when C.if D.after 【答案】A 【解析】 【详解】 句意“除非罗尼没有通过面试,否则他将有机会在这个公司上班”。A.除非;B.当……时候;C.如果;D.在……时候。根据句意可知,表示“除非他没有通过面试”,故选A。 4.She eats ice-cream a lot, ________it isn't good for her. A.after B.until C.because D.although 【答案】D 【解析】 【详解】 句意:她经常吃冰淇淋,虽然这对她不好。考查连词辨析。A. after在……以后,表时间;B. until直到,表时间;C. because因为,表原因;D. although尽管,表让步。本句前后是让 步关系,需用although连接;根据句意语境,可知选D。 5.—The novel seems a little boring. —You won’t enjoy it _______________ you put your heart into it.

语法讲解 时间状语从句的用法解析及练习

语法讲解时间状语从句的用法解析及练习 状语从句在复合句中作状语,其位置较灵活,可以在主句之前、之后或中间(放在句首时状语从句后面常用逗号,放在句末时状语从句前面往往不用逗号)。根据状语从句的含义,状语从句主要分为时间状语从句、地点状语从句、原因状语从句、目的状语从句、方式状语从句、结果状语从句、条件状语从句、让步状语从句等八种。掌握以上各种状语从句的关键在于把握其相应的引导词。以下是对时间状语从句的基本用法进行小结,希望可以帮助到同学们有一更深的理解。 时间状语从句的引导词 when, before, after, as, while, till/until, since,whenever 时间状语从句的用法 时间状语从句的引导词所表示的意思不尽相同,要注意把握不同的时间状语从句的引导词所表示的不同时间关系,以及它在具体句子中对应的对应时态、语态等问题。 1. when、as、while引导的时间状语从句分析: (1) when引导时间状语从句时表示“当……的时候”,when既可以指时间段也可指时间点,从句中既可用延续性动词又可用非延续性动词,且动作既可和主句的动作同时发生又可在主句的动作之前或之后发生。 注意体会如下例句:I’ll call you when I get there. 我一到那里就给你打电话。// When the wind blows, all the doors rattle. 只要风一吹,这门就吱嘎作响。// He stopped trying, when he might have succeeded next time. 他不再试了,其实他可能下一次就成功。// When I came home my wife was cooking dinner. 我回家时,妻子在做晚饭。 如果when引导的时间状语从句的主语与主句主语相同,而从句的谓语又是be动词时,那么从句中的主语和be可以省略;当when引导的时间状语从句的主语与主句主语相同时,往往还可以用“when+分词”的形式替代该状语从句。例如:When (you are) in trouble, ask her for help. 当你遭遇麻烦的时候去向她求助。// When I came into the room (=When coming into the room), I found him lying there asleep. 当我进入房间的时候,我发现他躺在那儿睡着了。 (2) while引导时间状语从句时表示“当……的时候”,它强调主句的动作与从句的动作同时持续地进行,用于这一用法时while引导的时间状语从句和主句中的谓语动词必须是延续性动词,或者主句的动作发生在从句动作的进行过程中,主句中的谓语动词通常是非延续性动词,例如:Study while you study; play while you play. 该学习的时候就学习,该玩的时候就玩。// I met her while I was at school. 当我在学校的时候我遇见了她。 (3) as引导时间状语从句时表示“当……时,一边……一边……”,侧重表示两个动作同时发生(包括一个主语同时进行两个动作),或者一种动作随着另一种动作的变化而变化。例如:He jumps as he goes along. 他边走边跳。// I slipped on the ice as I ran home. 我跑回家时在冰上滑了一跤。// I saw him as he was getting off the bus. 正当他下公共汽车时, 我看见了他。// As the wind rose the noise increased. 刮风的时候噪声增大。

原因状语从句-练习题及答案

原因状语从句练习题: 一、填入恰当的连词 1. I didn’t go to school yesterday _________ I was ill. 2. ________ everybody is here, let’s begin our meeting. 3. ________ you are in poor health, you should not stay up late. 4. I asked her to stay to tea, ________ I had something to tell her. 5. ________ all the passengers are here, why don’t we start at once? 6. Bill won’t make any progress ________ he doesn’t study harder than before. 7. He might have gone to bed, ________ the light went out. 二、改写句子,保持句意不变 1) The ship changed its course because there was a storm. The ship changed its course _______ _______ _______ _______. 2) Because he was ill, he didn’t go to school. He was ill, _______ he didn’t go to school. 3) He couldn't walk because his leg was broken. He couldn't walk ______ ______ his ______ leg. 4) I came back because it was raining heavily. I came back ______ ______ the ______ rain. 练习答案: 一、1.because 2.Since 3.As 4.because 5.Since 6.because 7.for

时间、条件、原因状语从句练习【专项练习,简单】.

【状语从句练习】选择题【 1】 ( 1 The meeting didn't start___ everyone was there. A. because B. until C. why D. if ( 2 The boy ___ to bed ___ his mother came in. A. went not; until B. didn't go; after C. went; until D. didn't go; until ( 3 I won't believe you___ I have seen it with my own eyes. A. before B. until C. after D. when ( 4 He ___ home ___ she was satisfied ___ his answer yesterday. A. didn't go; until; with B. wasn't go; after; to C. doesn't go; before; with D. didn't go; until; to ( 5 He ___ back until the work ___ done. A. isn't; will be B. isn't; is C. won't be; will be D. won't be; is ( 6 They didn't start the work ___ their teacher came back. A. until B. while C. as soon as D. if 【 2】 ( 1 Tom will call me as soon as he ___ Shanghai. A. arrives B. will reach C. arrives in D. get to ( 2 I'm sure he'll come to see me before he ___ Beijing. A. will leave B. is leaving C. leave D. leaves

对原因状语从句几个连词的区分

对原因状语从句几个连词的区分 In the morning I didn’t need to get out early. I would always spend over an hour just surfing_______Internet. The same would happen at night. I didn’t go to bed ________I felt very tired and sleepy. Later I made a _________(decide) to develop a new habit because I didn’t like the feeling I had when_________(waste) time on the computer. I simply decided that I would not go near my computer before 9 a.m. or after 9 p.m.,________has worked indeed. Now, I can’t say that I never quit, but on the whole, I find I feel much better, more_________(relax) and more in control of m day and my rest. Every time I quit, I remind________immediately why I hoped to develop this habit in the beginning. It is also helpful to keep things in order. ________I don’t yet have a cellphone, my new habit means it can be________twenty –hours or more that I will be away from my emails. I am happy that I can decide when to turn on my computer and deal with emails and________to spend my time. 答案:the; felt; decision; waiting; which; relaxed; myself; as; for; how because, as, for, since这几个词都是表示“原因”的连词,语气由强至弱依次为:because→since→as→for;其中because, since, as均为从属连词,引导原因状语从句;而for 是并列连词,引导并列句. 1. because表示直接原因,它所指的原因通常是听话人所不知道的,其语气最强.常用来回答why的提问,一般放于主句之后,也可以单独存在.例如: (1)I stayed at home because it rained. 因为下雨我呆在家里. (2)Because Lingling was ill, she didn”t come to school. 玲玲因病,没有上学.

高中原因状语从句及练习(含答案)教学提纲

2.原因状语从句 原因状语从句表示主句中动作或状态发生的原因或理由, 可位于主句之前,之后或插在主句中间。主句表示结果, 从句表示原因, 主要由because, as, since, for, seeing ( that), considering ( that), now (that), in that, not ... because 等引导。 1) because“因为’’, as‘‘由于”, since “既然”, for“因为” because意为“因为”, 表示直接的原因或理由, 着重点在从句, 用于回答why,语气最强。 He is absent today because he is ill. 当主句为否定句时, 从句because须用逗号与主句隔开, 否则容易引起歧义。 I didn’t visit him, because I wanted to borrow some books. 我没去拜访他, 因为我想借几本书。 I didn’t visit him because I wanted to borrow some books. 我不是因为想借几本书才去拜访他的。 as意为“由于”, 表示十分明显的原因, 所引导的从句常位于主句之前, 有时也可位于主句之后, 一般说明因果关系, 着重点在主句, 原因或理由只是附带说明, 不用于回答why的问题, 常用于口语。 As it is snowing, we shall not go to the park. As this book is written in simple English, it is suitable for beginners. since意为“既然, 由于”时表示对方已知的、无须加以说明的既成事实的理由, 只是一个附带说明。since = as it is the fact that ...全句中心在主句。如从句表示的原因不是确定的事实, 就不能用since,通常用because. Since everybody is here, let’s begin our discussion. Since you seem to know them, why don’t you introduce me to them? for是一个并列连词, 由for连结的表原因的句子常看作并列句, 它只提供一些补充说明或对前一个分句加以解释, 不可前置。与because 不同的是:because引导的从句位置可前可后, 而for引导的分句只能后置, 且往往须用逗号或分号与前一个分句分开。 I didn’t go to see him, for a heavy snow was falling. The days were short, for it was now December. 有时, for引起的从句并不表示原因, 而是表示一种推断或解释, 而because则不能。 Someone in the house must be ill, for a doctor has just come out. He couldn’t have seen me, for I was not there. 一、填入恰当的连词 1. I didn’t go to school yesterday _________ I was ill. 2. ________ everybody is here, let’s begin our meeting. 3. ________ you are in poor health, you should not stay up late. 4. I asked her to stay to tea, ________ I had something to tell her. 5. ________ all the passengers are here, why don’t we start at once? 6. Bill won’t make any progress ________ he doesn’t study harder than before.

状语从句语法讲解

咼中英语状语从句 定义: 在句中作状语的从句是状语从句,修饰主句中的动词、形容词或副词等.状语从句由从属连词引导,从属连词在句中不充当句子成分,只起连接作用,状语从句放在句首时,要用逗号,放在句 尾时不用. 分类 根据意义上的不同,状语从句可分为:①时间状语从句②地点状语从句③原因状语从句④ 目的状语从句⑤条件状语从句⑥结果状语从句⑦让步状语从句⑧方式状语从句⑨比较 状语从句三、时间状语从句主句是一般将来时,时间状语从句用一般现在时表将来;主句是—过去将来时,从句用一般过去时表示过去将来时;主句是一般过去时忆:“主将 ,从句用一般过去时.记从现” (一)引导时间状语从句的连词有:As,whe n (whe never),before,after,as soo n as,un til (till),since,every time,once. | (二)、具体应用1)“while ”主、从句动作或状态同时发生.用while引导的从句用延续性 动词,常表示较长的时间或一个过程.记忆:While 后用进行时.While we were having supper, all the lights went out. Please kee p quiet while others are study in g」 While I was writing letters last night,he was watching TV. 2 )When 表示“就在”的时候", while 意为反而,可是,表示转折.One evening Beethoven was walking in a street,when he sudde niy stopped outside a little house. 3)When ever无论什么时候,随时 1.When ever some one throws in some rubbish,the truck p roduees a pi eee of music. 每当有人扔进一些垃圾时,它(汽车)就放一段音乐 2.When ever we' re in trouble,they will help us. 3.I go to the theatre, whe never I am free. https://www.wendangku.net/doc/414901033.html,e and see me whe never you want to.你随时来看我 4) till和until(表示"直到” ”)句首多用until | 1在肯定句中表示“直到”为止”,主句谓语动词要用延续性动词 I was wait ing un til/till he arrived. 2、在否定句中表示“直到,,才”主句谓语动词常用终止性动词,这时until和till常被before 替换. I did n' t leave till/un til she came back. 5) si nee:主句用完成时,从句用一般过去时,si nee引导的从句间或可用现在完成时 It is two years since I have studied En glish. 1.We have known each other si nee we were childre n. 2.We have bee n friends (ever sin ce) since we met at school. 3.It is ”(一段时间)+since+—般过去时态句子 It is two years since my sister married. I

原因状语从句练习题及答案

一、填入恰当的连词 1. I didn’t go to school yesterday _________ I was ill. 2. ________ everybody is here, let’s begin our meeting. 3. ________ you are in poor health, you should not stay up late. 4. I asked her to stay to tea, ________ I had something to tell her. 5. ________ all the passengers are here, why don’t we start at once? 6. Bill won’t make any progress ________ he doesn’t study harder than before. 7. He might have gone to bed, ________ the light went out. 二、改写句子,保持句意不变 1) The ship changed its course because there was a storm. The ship changed its course _______ _______ _______ _______. 2) Because he was ill, he didn’t go to school. He was ill, _______ he didn’t go to school. 3) He couldn't walk because his leg was broken. He couldn't walk ______ ______ his ______ leg. 4) I came back because it was raining heavily. I came back ______ ______ the ______ rain. 练习答案: 一、 二、 of the storm 2. so 3. because of broken 4. because of heavy 作业: 一、填入恰当的连词 1. ______ you do not understand, I will explain again. 2. ______ Jane was the oldest in this family, she had to look after the others.

原因状语从句

在复合句中,由从句表示的状语叫做状语从句。它可以用来修饰主语中的动词.形容词.副词等。根据它表达的意思,状语从句可以分为时间状语从句,地点状语从句,条件状语从句,比较状语从句,目的状语从句,结果状语从句和让步状语从句等。由连接词if或unless引导的状语从句叫做条件状语从句。在英文中,条件是指某一件事情实现之后(状语从句中的动作),其它事情(主句中的动作)才能发生,通常译作“假如”。(注意:在含有条件状语从句的复合句中,表示将来时态,主句是一般将来时态,从句要用一般现在时[主将从现原则]) [编辑本段] 条件状语从句的有关知识 语法引导条件状语从句最常用的连词是if,由if引导的条件状语从句表示在某种条件下某事很可能发生。如: If you ask him, he will help you.如果你请他帮忙,他会帮你的。 If you fail in the exam, you will let him down.如果你考试不及格,你会让他失望的。 另外,if从句还表示不可实现的条件或根本不可能存在的条件,也就是一种虚拟的条件或假设,从句多用一般过去时或过去完成时。如: If I were you, I would invite him to the party.如果我是你,我会邀请他参加聚会。 I would have arrived much earlier if I had not been caught in the traffic.如果没有堵车,我会到的早一点儿。 那么,除了if之外,是否还有其他连词也可以引导条件状语从句呢?回答是肯定的,不仅有,还有很多。这些词由于出现的频率较小,且用法较复杂一些,所以不如if为大家所熟知罢了。下面就这些词的用法以例句的形式进行一下简单总结。 1、unless conj.除非,若不,除非在……的时候 You will fail to arrive there in time unless you start earlier.如果你不早点动身,你就不能及时赶到那儿。 Unless it rains, the game will be played.除非下雨,比赛将照常进行。 2、on condition(that)...在……条件下,如果on condition (that)...引导的条件从句是主句事件发生的前提条件或唯一条件。 I can tell you the truth on condition that you promise to keep a secret.我可以告诉你真相,条件是你答应保守秘密。 You can go swimming on condition (that) you don't go too far from the river bank.你只有在不远离河岸的条件下才可以下水游泳。 3、supposing conj.如果,假如supposing引导的条件从句表示一种假设条件。 Supposing it rains, shall we continue the sports meeting?倘若下雨,我们的运动会还要继续举行吗?

时间状语从句地引导词

时间状语从句的引导词 when, before, after, as, while, till/until, since,whenever 时间状语从句的用法 时间状语从句的引导词所表示的意思不尽相同,要注意把握不同的时间状语从句的引导词所表示的不同时间关系,以及它在具体句子中对应的对应时态、语态等问题。 1. when、as、while引导的时间状语从句分析: (1) when引导时间状语从句时表示“当……的时候”,when既可以指时间段也可指时间点,从句中既可用短暂性动词又可用延续性动词,且动作既可和主句的动作同时发生又可在主句的动作之前或之后发生。 注意体会如下例句: I’ll call you when I get there. 我一到那里就给你打电话。 When the wind blows, all the doors rattle. 只要风一吹,这门就吱嘎作响。

When I came home my wife was cooking dinner. 我回家时,妻子在做晚饭。 如果when引导的时间状语从句的主语与主句主语相同,而从句的谓语又是be动词时,那么从句中的主语和be 可以省略;当when引导的时间状语从句的主语与主句主语相同时,往往还可以用“when+分词”的形式替代该状语从句。例如: When (you are) in trouble, ask her for help. 当你遭遇麻烦的时候去向她求助。 When I came into the room (=When coming into the room), I found him lying there asleep. 当我进入房间的时候,我发现他躺在那儿睡着了。 (2) while引导时间状语从句时表示“当……的时候”,它强调主句的动作与从句的动作同时持续地进行,用于这一用法时while引导的时间状语从句和主句中的谓语动词必须是延续性动词,或者主句的动作发生在从句动作的进行过程中,主句中的谓语动词通常是非延续性动词,例如 Study while you study; play while you play.

语法知识—状语从句的解析含答案

一、选择题 1.—If it________tomorrow, I’ll go fishing. — May I go along with you? A.didn’t rain B.won’t rain C.doesn’t rain 2.—the water was cold , Wei Qinggang jumped into it to save others. A.Although B.When C.If D.Because 3.Jenny often eats a lot of fruit and vegetables_______she knows they are good for health. A.because B.but C.or 4.Although he _______up very early this morning, _______he was still late for school. A.get ; and B.got;/ C.gets ;so D.got ; but 5.I still have difficulty ________the article________ there are few new words in it. A.to understand; because B.understand ; though C.understanding ; if D.understanding ; though 6.I couldn’t avoid making _______noise, _______I tried my best. A.so much; although B.so many; although C.so much; so that D.so many; so that 7.—Do you know________the meeting will last? —________the agreement is reached. A.how long; Not until B.when; Not until C.how long; Until D.when; Until 8.The little girl is crying,she can’t fin d her parents. A.and B.but C.so D.because 9.I can’t understand that the woman often complains_______she has got a well-paid job and a happy family. A.whenever B.since C.until D.though 10.--- What was the party like? --- Wonderful. It’s years ____ I enjoyed myself so much. A.since B.after C.when D.before 11.—Has Jim known the good news? —Not yet. I will tell him about it ________ he comes back. A.while B.until C.as soon as D.since 12.All of us don't like this game, ____ it's too boring. A.and B.so C.because 13.—Mom, I’m leaving for Beijing tomorrow. —That’s nice. You’d better ring me up________you get there. A.as soon as B.until C.while 14.There are fewer and fewer tigers in India. The situation will continue _______ humans stop hunting them for their fur and bones.

原因状语从句

1、定义:在句中用来说明主句原因的句子叫原因状语从句。 2、常用引导词: because(因为), as (由于), since (既然), now (that) (既然) 3、时态:原因状语从句一般都是根据实际情况选用适当的时态。通常是主过从 过,主现从现。 4、because, since和as的区别: 1) because引导的原因状语从句一般放于主句的后面,because从句位于句首时要用逗号分开,放在句末时,可不用逗号分开。because表示直接原因,语气最强,最适合回答why引导的疑问句。because of 也表示原因,但它后面不接从句, 只能接名词, 代词或动名词。注意:because 和so 不可同时出现在一个句子里。 ①I do it because I like it. = I like it so I do it. ②We went by bus because it was cheaper. = It was cheaper so we went by bus. ③He can’t go to school because of his illness. 2) since引导的原因状语从句一般放于主句之前表示已知的、显然的理由(通常被翻 译成“既然”= now that ),较为正式,语气比because弱。 ①Since you are free today, you had better help me with my mathematics. ②Since you don't trust him, you should not employ him. ③Now (that) you are grown up, you should not rely on your parents. 3) as引导原因状语从句时表示附带说明的“双方已知的原因”,含有对比说明的意味, 语气比since弱,较为正式,位置较为灵活(常放于主句之前)。 ①As it is raining, you’d better take a taxi. ②As you are tired, you had better rest. ③I went to bed early, as I was exhausted. 4) for引导的是并列句表示原因但并不说明主句行为发生的直接原因,只提供一些辅 助性的补充说明,for引导的并列句只能放于主句之后并且必须用逗号将其与主句隔开。 ①He could not have seen me, for I was not there. ②He seldom goes out now, for he is very old. 5.

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